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| coded
variable levels |
||||
|---|---|---|---|---|
| independent variable | unit | 1 | 0 | –1 |
| oil flow rate (ϕv,oil) | mL/min | 16 | 12 | 8 |
| alcohol to oil molar ratio (M) | 12:1 | 9:1 | 6:1 | |
| weight hourly space time (WHST) | h | 0.075 | 0.045 | 0.015 |
